using identity (a+b)^2 = a^2 + 2ab + b^2 find the value of x^2 + 1/x^2 if x+1/x = 3
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Solution is in the attached photo....
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Answer:7
Step-by-step explanation:
A.T.Q= x+1/x =3
= (x+1/x)² =3²
= x² + 1/x² + 2×x×1/x =9
= x²+1/x² +2 =9
= x²+1/x² =9-2
= x²+1/x² =7
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